Door-securing mechanism.



E. E. GAGE.

DOOR SECURING MECHANISM.

APPLICATION man JUNE 30.1916.

Patented May 8, 191?.

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EDWARD E. GAGE, OF NEW YORK, N. Y.

DOOR-SECURING MECHANISM.

Specification of Letters Patent.

Patented May 8, 1917.

Application filed June 30, 1916. Serial No. 106,845.

To all whom it may concern:

Be it known that I, EDWARD E. GAGE, a citizen of the United States, and a resident of New York, borough of Manhattan, in the county of New York and State of New York, have made and invented certain new and useful Improvements in Door-Securing Mechanisms, of which the following is a specification.

My invention relates to fastening means for doors and has for its object in general to provide a simple and convenient attachment which may be readily applied to the ordinary locking and latching attachments of doors and which will render such doors proof against jimmying.

In accordance with the general features of this invention a plurality of securing bolts are provided for securing the door to the casing at widely separated points and in such a manner that even if the door be pried away from one side of its casing it will still be secured at other portions. The withdrawal of the bolts from their sockets is under the joint control of the key and the door knob so that even in case the lock is forced by pushing back the locking bolt or by any other means than the operation of the lock mechanism by the key, it will still be impossible to withdraw the bolts of the attachment of this invention.

.M-ore specifically this invention comprises the use of three locking bolts in addition to the ordinary locking bolt provided, these locking bolts preferably being located at the top, bottom and hinged side of the door and adapted to be moved by means of the door knob proper, the movement of which is in turn controlled by the operating mechanism of the look.

In the drawing illustrating this invention Figure 1 is a view in front elevation from the inside of a door equipped with the attachment of this invention.

Fig. 2 is an enlarged detail view of a portion associated with the door knob and showing one feature of the invention.

Fig. 3 is a cross sectional view taken upon line 3-3 of Fig. 2.

Fig. 4: is a view in front elevation with the cover plate removed of a well known form of tumbler lock with which this invention is capable of use and Fig. 5 is a cross sectional. view taken upon line 5-5 of Fig. 4.

As shown in the drawings 5 designates a door casing within which is hinged at 6 and 7 a door 8. Secured to the door 8 at the side thereof opposite the hinges is a lock 9 which is preferably of the well known cylinder pin tumbler type. Also secured to the door 8 and below the lock 9 is a plate 10 concealing a latch mechanism, (not shown) which is controlled -by rotatable knob 11 in a manner well known.

Located between the plate 10 and the knob 11 and adapted to rotate with the knob is a plate 12 preferably circular in form and having a notch 13 in the upper side thereof and a plurality of radially arranged pr-ojections 1a, 15 and 16 extending therefrom at each side and at the bottom thereof. Secured to these projections 1d, 15 and 16 are rods 1'7, 18 and 19. To the end of the rod 17 which extends toward the bottom of the door, is secured a bolt 20 slidable in holders 21, 21 and adapted to engage a socket in the door casing 5 at the bottom of the door.

A similar bolt 23 is secured to the outer end of rod 18 and is adapted to engage a socket 24: in the door casing 5 at the hinged side of the door 8. A third bolt 25 controlled by the rod 19 is adapted to engage a socket 26 in the casing at the top of the door.

Slidably mounted in retaining members 80, 30 secured to the plate 10 is a bolt 31 adapted to be moved into and out of engagement with the notch 13 in plate 12 to control the rotation of the knob 11. The bolt 31 may be connected by means of a chain 32 and link 33 with a projection 35 on a sleeve member 36 which is adapted to be rotated by a key 37 in the operation of the lock 9 to withdraw the bolt 38 of the look from its engaging socket.

' In operation, assuming first that the door is locked and all parts are in the position shown in Fig. 1 and the operator is on the outside, it will first be necessary to turn back the bolt 38 of thetumbler lock 9 by the key 37 which will lift the bolt 31 through the agency of the member 36, link 33 and chain 32 and thus release the knob 11 and plate 12 so that they may be turned. As the knob 11 is turned the rods 17 18 and 19 will be moved to withdraw their respective bolts 20, 23 and 25 from their sockets and the door will be free to swing. with the door looked as above and the operator on the inside, turn back the bolt 88 of the tumbler lock 9 by its knob in the usual manner and lift the bolt 31 out of its socket in the plate 12 by hand thus releasing knob 1.1 and plate 12 so that they may be turned. As knob 11 is turned the rods 17, 18 and 19 will be moved to withdraw their respective bolts 20, 23 and 25 from their sockets and the door will be free to swing. The withdrawing of the bolt 38 of the lock 9 by any other means than the key will not operate the mechanism controlling bolt 31. Bolt 31 is only operated by the key from the outside or by hand from the inside.

To lock the door: Close door and bolt 38 of lock 9 automatically enters its socket. Turn door knob and plate 19 turns in con junction moving rods 17, 18 and 19 so that bolts 20, 28 and 25 will ei'igage their respective sockets in door casing. Bolt 31 which was resting on the periphery of plate 12 will drop by gravity into slot 18 in plate 12 thereby securing bolts 20, 23 and 25 in their locked positions and the fact that the knob can be turned no further in either direction shows the operator that all bolts are in locked position.

While the bolt 31 is shown and described as being gravity operated, it is quite obvious that it might be moved into engagement with the notch 13 in the plate 12 by means of a spring.

Having now described my invention, which may vary in detail without departing from the spirit thereof, What 1 claim, and desire to secure by Letters Patent, is

l. The combination with a door and door casing, a latching mechanism for said door, a key controlled lock for said door, and additional securing means for said door comprising a plurality of bolts adapted to secure said door to said casing at top, bottom and side, and means controlled jointly by said lock and said latching mechanism for controlling the operation of said additional securing means.

2. The combination with a door and door casing of a knob controlled latching mechanism for said door, a key controlled lock for said door, a socket in said casing remote from said latching mechanism and said look, a bolt carried by said door adapted to be moved into and out of engagement with said socket by means of said latching mechanism, and means controlled by said lock for preventing the movement of said latching mech anism.

3. The combination with a door and door casing, a latching mechanism therefor, a rotatable member for said latching mechanism, a socket in said casing at one end of said door, a bolt carried by said door and adapted to engage said socket, a key controlled lock on said .door separate from said latching mechanism, and means controlled by said key controlled lock for controlling the rotation of said rotatable member, and an operating connection between said rotatable member and said bolt.

1-. The combination with a door and door casing a latching mechanism, a knob for operating said latching mechanism, a plate secured to rotate with said knob, a key controlld lock separate from said latching mechanism, a bolt controlled by said key controlled lock adapted to engage said plate to hold said knob against rotation, a socket in said door casing at one end-thereof a second bolt on said door adapted to engage said socket and connection between said bolt and said plate whereby the rotation of said plate moves said second bolt into and out of engagement with its socket.

5. T he combination with a door and door casing, a latching means carried by said door, a key controlled lock on said door, a rotatable member for controlling said latching mechanism, a plate secured to rotate therewith a plurality of radial arms eX- tending from said plate, slidable bolts secured to said door at the top, bottom and one side thereof and operatively connected with said plate and locking means for said plate controlled by said key controlled look.

In witness whereof, I hereunto subscribe my name this 29th day of June, A. D. 1916.

EDlVARD E. GAGE.

Witnesses I E. S. MITCHELL, D. A. DAVIES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

